| 1 | /* |
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| 2 | * Copyright (c) 2010 David Xu <davidxu@freebsd.org> |
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| 3 | * |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * 1. Redistributions of source code must retain the above copyright |
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| 10 | * notice unmodified, this list of conditions, and the following |
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| 11 | * disclaimer. |
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * |
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 26 | * |
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| 27 | * $FreeBSD: head/include/semaphore.h 314424 2017-02-28 21:47:00Z vangyzen $ |
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| 28 | */ |
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| 29 | |
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| 30 | /* semaphore.h: POSIX 1003.1b semaphores */ |
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| 31 | |
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| 32 | #ifndef _SEMAPHORE_H_ |
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| 33 | #define _SEMAPHORE_H_ |
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| 34 | |
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| 35 | #include <sys/cdefs.h> |
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| 36 | #include <sys/lock.h> |
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| 37 | #include <sys/_types.h> |
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| 38 | #include <sys/_timespec.h> |
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| 39 | |
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| 40 | typedef struct { |
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| 41 | unsigned long _flags; |
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| 42 | struct _Semaphore_Control _Semaphore; |
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| 43 | } sem_t; |
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| 44 | |
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| 45 | #define SEM_FAILED ((sem_t *)0) |
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| 46 | |
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| 47 | __BEGIN_DECLS |
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| 48 | int sem_close(sem_t *); |
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| 49 | int sem_destroy(sem_t *); |
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| 50 | int sem_getvalue(sem_t * __restrict, int * __restrict); |
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| 51 | int sem_init(sem_t *, int, unsigned int); |
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| 52 | sem_t *sem_open(const char *, int, ...); |
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| 53 | int sem_post(sem_t *); |
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| 54 | int sem_timedwait(sem_t * __restrict, const struct timespec * __restrict); |
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| 55 | int sem_trywait(sem_t *); |
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| 56 | int sem_unlink(const char *); |
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| 57 | int sem_wait(sem_t *); |
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| 58 | __END_DECLS |
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| 59 | |
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| 60 | #endif /* !_SEMAPHORE_H_ */ |
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